San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
Are Rats Able to Swim, or Do They Drown?
Though rats are not the most desired animals to have around your home, you will be amazed by the incredible survival instincts these rodents have. One of these survival instincts is their ability to survive in water. Rats are excellent swimmers, with their legs, tail, and rhythmic body movements, they can wade in the water for up to three days without drowning
These special skills allow them to be able to survive in water if by circumstance they find themselves stuck in a bucket of water, bathtub, or toilet. In cases where the water body is not restricted by a container or an object, rats use their swimming skills to find their way to dry land close by.
If you happen to find a rat stuck in water, the best thing you can do is to remove it and relocate it somewhere far away from your home or anywhere you are. Refusing to do this and expecting it to drown will only cost you your time because the rat will try as much as possible to survive.
Rats do drown in water, but that will only happen after 3 days when the rat has exhausted all of its energy swimming with no way out. Only a few rodents have this special kind of survival instinct, this clearly shows how smart and intelligent rats are.
Nevertheless, you shouldn't allow rats to run around your house and make your home their nesting place. If you find rats in the water around your home, you need to get them removed and relocated somewhere safe and far from your home to prevent further reentry. Rats are a menace to your health, so you need to look for the best way to get rid of them quickly.
